Deep mixing for excavation support: Design issues

Cassandra J. Rutherford, Giovanna Biscontin, Jean Louis Briaud

Research output: Contribution to journalConference articlepeer-review

Abstract

Deep mixing is effectively used in excavations both in conjunction with and in substitution of traditional techniques, where it results in more economical and convenient solutions for the stability of the system and the prevention of seepage. Deep mixed walls constructed as part of a soldier pile and tie-backs system act also as temporary support, prevent seepage like a sheet pile wall, but require a lower amount of steel. The deep mixed treatment can also contribute to the stability of the wall system against deep-seated failures. Although deep mixing is currently used for excavation control in numerous projects, no standard procedure has been developed and the different applications have not been evaluated. As this technique emerges as a more economical and effective alternative to traditional excavation shoring, there is a need for guidelines describing proven procedures for evaluation of design, analysis and construction. This paper presents comparisons in the design of excavation support using deep mixing and other traditional techniques. Issues important for design, analysis, and construction of deep mixed excavation walls are also discussed.

Original languageEnglish (US)
Pages (from-to)1356-1365
Number of pages10
JournalGeotechnical Special Publication
Issue number126 II
DOIs
StatePublished - 2004
Externally publishedYes
EventGeotechnical Engineering for Transportation Projects: Proceedings of Geo-Trans 2004 - Los Angeles, CA, United States
Duration: Jul 27 2004Jul 31 2004

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Architecture
  • Building and Construction
  • Geotechnical Engineering and Engineering Geology

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